A display device includes a substrate including an opening area in a display area and a non-display area between the display area and the opening area; signal wires disposed in the non-display area to bypass the opening area, and at least one groove disposed between the signal wires.
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3. The display device of claim 1, wherein the substrate includes a first base layer, a first inorganic layer, a second base layer, and a second inorganic layer, which are sequentially stacked on each other.
4. The display device of claim 3, wherein a bottom of the at least one groove is disposed on a surface of the second base layer.
A display device includes a substrate with a first base layer, a second base layer, and a groove structure. The groove structure has at least one groove formed in the first base layer, and the bottom of the groove is positioned on the surface of the second base layer. The second base layer is positioned below the first base layer. The groove structure may include multiple grooves arranged in a pattern, such as a grid or a series of parallel lines, to improve structural integrity or facilitate manufacturing processes. The display device may also include additional layers, such as an active layer for electronic components or a protective layer, depending on the application. The groove structure helps enhance flexibility, reduce stress concentrations, or improve adhesion between layers. The second base layer provides mechanical support and may be made of a material with different properties than the first base layer, such as higher rigidity or thermal stability. The groove structure and layer arrangement are designed to optimize performance in flexible or foldable display applications.
5. The display device of claim 3, wherein a bottom of the at least one groove is disposed in part of the second base layer.
A display device includes a substrate with a base layer structure and a display layer. The base layer structure comprises a first base layer and a second base layer, where the second base layer is positioned on the first base layer. The display layer is formed on the second base layer and includes a plurality of pixels for generating images. The device further includes at least one groove formed in the base layer structure, extending through the second base layer and partially into the first base layer. The groove is configured to facilitate bending or folding of the display device. The bottom of the groove is located within the second base layer, meaning it does not fully penetrate the first base layer. This design allows the display to flex or bend while maintaining structural integrity, reducing stress concentration and preventing damage during repeated bending cycles. The groove's partial depth ensures mechanical stability while enabling flexibility. The display layer remains intact, ensuring consistent image quality even when the device is bent. This structure is particularly useful for flexible or foldable electronic displays, such as in smartphones, tablets, or wearable devices, where durability and flexibility are critical. The groove's placement and depth are optimized to balance flexibility and rigidity, enhancing the device's lifespan and performance.
9. The display device of claim 7, wherein the at least one groove comprises a plurality of grooves that are disposed between the first scan lines and the second scan lines and between the first data lines and the second data lines.
10. The display device of claim 7, wherein a width of the at least one groove in the second base layer is greater than a width of the at least one groove in the second inorganic layer.
11. The display device of claim 7, wherein the third insulating layer covers an inner surface of the at least one groove.
13. The display device of claim 12, wherein the organic light-emitting layer and the counter electrode layer are sequentially stacked on each other on a bottom of the at least one groove.
15. The display device of claim 14, wherein the thin-film encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, which are sequentially stacked on each other.
16. The display device of claim 15, wherein the first inorganic encapsulation layer covers an inner surface of the at least one groove.
17. The display device of claim 15, wherein the organic encapsulation layer fills the at least one groove.
19. The display device of claim 18, wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer are sequentially stacked on each other on the partition wall.
The invention relates to display devices, specifically to an encapsulation structure for organic light-emitting diode (OLED) displays. The problem addressed is improving the reliability and durability of OLED displays by enhancing the encapsulation structure to prevent moisture and oxygen ingress, which can degrade the organic materials in the display. The display device includes a substrate with a display area and a non-display area. A partition wall is formed in the non-display area, surrounding the display area. The partition wall has a stepped structure with a first step and a second step. An organic light-emitting element is disposed in the display area, and an encapsulation structure is formed over the display area and the partition wall. The encapsulation structure includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer sequentially stacked on each other. The first and second inorganic encapsulation layers are also sequentially stacked on the partition wall, particularly on the first and second steps of the stepped structure. This stacked arrangement on the partition wall ensures a robust seal, preventing moisture and oxygen from infiltrating the display area and damaging the organic light-emitting element. The stepped structure of the partition wall further enhances the adhesion and coverage of the encapsulation layers, improving the overall reliability of the display device.
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August 27, 2020
November 15, 2022
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